<template>
  <div>
    <!-- 面包屑导航 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>添加商品</el-breadcrumb-item>
    </el-breadcrumb>

    <el-card>
      <!-- 提示区域 -->
      <el-alert
        title="添加商品信息"
        type="info"
        center
        show-icon
        :closable="false"
      >
      </el-alert>
      <!-- 步骤区域 -->
      <el-steps
        :space="200"
        :active="activeName - 0"
        finish-status="success"
        align-center
      >
        <el-step title="基本信息"></el-step>
        <el-step title="商品参数"></el-step>
        <el-step title="商品属性"></el-step>
        <el-step title="商品图片"></el-step>
        <el-step title="商品内容"></el-step>
        <el-step title="完成"></el-step>
      </el-steps>
      <el-form
        :model="addForm"
        :rules="addRules"
        ref="addFormRef"
        label-width="100px"
        class="demo-ruleForm"
        label-position="top"
      >
        <!-- 左边激活栏 -->
        <el-tabs
          :tab-position="'left'"
          v-model="activeName"
          :before-leave="beforLeave"
          @tab-click="tabClick"
        >
          <el-tab-pane label="基本信息" name="0">
            <el-form-item label="商品名称" prop="goods_name">
              <el-input v-model="addForm.goods_name"></el-input>
            </el-form-item>
            <el-form-item label="商品价格" prop="goods_price">
              <el-input v-model="addForm.goods_price" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品重量" prop="goods_weight">
              <el-input v-model="addForm.goods_weight" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品数量" prop="goods_number">
              <el-input v-model="addForm.goods_number" type="number"></el-input>
            </el-form-item>
            <!-- 级联选择器 -->
            <el-form-item label="商品分类" prop="goods_cat">
              <el-cascader
                v-model="addForm.goods_cat"
                :options="paramsList"
                :props="cateProps"
                @change="handleChange"
              ></el-cascader>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品参数" name="1">
            <el-form-item
              :label="item.attr_name"
              v-for="item in manyTableData"
              :key="item.attr_id"
            >
              <!-- 复选框组 -->
              <el-checkbox-group v-model="item.attr_vals">
                <el-checkbox
                  :label="cd"
                  v-for="(cd, i) in item.attr_vals"
                  :key="i"
                  border
                >
                </el-checkbox>
              </el-checkbox-group>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品属性" name="2">
            <el-form-item
              v-for="item in onlyTableData"
              :key="item.attr_id"
              :label="item.attr_name"
            >
              <el-input v-model="item.attr_vals"></el-input>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品图片" name="3">
            <el-upload
              action="http://127.0.0.1:8888/api/private/v1/upload"
              :on-preview="handlePreview"
              :on-remove="handleRemove"
              list-type="picture"
              :headers="headerObj"
              :on-success="handleSuccess"
            >
              <el-button size="small" type="primary">点击上传</el-button>
            </el-upload>
          </el-tab-pane>
          <el-tab-pane label="商品内容" name="4">
              <quill-editor v-model="addForm.goods_introduce"></quill-editor>
              <el-button type="primary" class="btn" @click="add">添加商品</el-button>
          </el-tab-pane>
        </el-tabs>
      </el-form>
    </el-card>
    <!-- 图片预览 -->
    <el-dialog
      title="图片预览"
      :visible.sync="dialogVisible"
      width="30%"
    >
      <img :src="previewPath" alt="" class="previewImg">
      
    </el-dialog>
  </div>
</template>

<script>
import _ from 'lodash'
export default {
  name: "Add",
  data() {
    return {
      //上传图片组件的请求头对象
      headerObj: {
        Authorization: window.sessionStorage.getItem("token"),
      },
      dialogVisible:false,
      onlyTableData: [],
      manyTableData: [],
      activeName: "0", //默认激活的页面
      paramsList: [], //商品分类列表
      previewPath: "", //图片预览地址
      //绑定的数据
      addForm: {
        goods_name: "",
        goods_price: 0,
        goods_weight: 0,
        goods_number: 0,
        goods_cat: [], //商品所属的分类数组
        pics: [], //上传的图片临时路径
        goods_introduce:'',//商品介绍
        attrs:[]
      },

      cateProps: {
        value: "cat_id",
        label: "cat_name",
        children: "children",
        expandTrigger: "hover",
      },

      addRules: {
        goods_name: [
          { required: true, message: "请输入商品名称", trigger: "blur" },
        ],

        goods_price: [
          { required: true, message: "请输入商品价格", trigger: "blur" },
        ],

        goods_weight: [
          { required: true, message: "请输入商品重量", trigger: "blur" },
        ],

        goods_number: [
          { required: true, message: "请输入商品数量", trigger: "blur" },
        ],

        goods_cat: [
          { required: true, message: "请输入商品分类", trigger: "blur" },
        ],
      },
    };
  },

  created() {
    this.getParamsList();
  },

  methods: {
    async getParamsList() {
      const { data: res } = await this.$http.get("categories");
      if (res.meta.status == 200) {
        this.paramsList = res.data;
        this.$message.success("获取商品分类成功");
      } else {
        this.$message.error("获取商品分类失败");
      }
    },
    //级联选择器变化是触发
    handleChange() {
      if (this.addForm.goods_cat.length != 3) {
        this.addForm.goods_cat = [];
        this.$message.warning("请选择三级分类");
      }
    },

    beforLeave(activeName, oldActiveName) {
      if (this.addForm.goods_cat.length != 3 && oldActiveName === "0") {
        this.$message.error("请选择商品分类");
        return false;
      }
    },

    //获取动态参数列表
    async tabClick() {
      if (this.activeName === "1") {
        const { data: res } = await this.$http.get(
          `categories/${this.cateId}/attributes`,
          {
            params: {
              sel: "many",
            },
          }
        );
        if (res.meta.status == 200) {
          this.$message.success("获取动态参数成功");
          res.data.forEach((item) => {
            item.attr_vals = item.attr_vals ? item.attr_vals.split(" ") : [];
          });
          this.manyTableData = res.data; //动态参数数据
        } else {
          this.$message.errro("获取动态参数失败");
        }
      } else if (this.activeName === "2") {
        const { data: res } = await this.$http.get(
          `categories/${this.cateId}/attributes`,
          {
            params: {
              sel: "only",
            },
          }
        );
        if (res.meta.status == 200) {
          this.onlyTableData = res.data;
          this.$message.success("获取静态属性成功");
          console.log(res.data);
        } else {
          this.$message.error("获取静态属性失败");
        }
      }
    },
    //处理图片预览效果
    handlePreview(file) {
      this.previewPath = file.response.data.url;
      this.dialogVisible=true
    },
    //移除上传的图片
    handleRemove(file) {
      //获取要删除图片的临时路径
      const filePath = file.response.data.tmp_path;
      //从pics数组中，找到这个图片对应的索引值
      const i = this.addForm.pics.findIndex((x) => x.pic === filePath);
      //调用数组的splice方法，把图片信息对象从pics数组中移除
      this.addForm.pics.splice(i, 1);
      console.log(this.addForm);
    },

    //监听图片上传成功事件
    handleSuccess(response) {
      //拼接得到一个图片信息对象
      const picInfo = { pic: response.data.tmp_path };
      //将图片信息对象，push到pics数组中
      this.addForm.pics.push(picInfo);
    },

    //添加商品
    add(){
        this.$refs.addFormRef.validate(async valid=>{
            if(!valid){
               return this.$message.error('请填写必要的表单项！')
            }

            //执行添加业务逻辑
            //处理动态参数
            const form =_.cloneDeep(this.addForm)
            form.goods_cat=form.goods_cat.join(',')
            this.manyTableData.forEach(item=>{
                const newInfo = {
                    attr_id: item.attr_id,
                    attr_value: item.attr_vals.join(',')
                }
                this.addForm.attrs.push(newInfo)
            })
            //处理静态属性
            this.onlyTableData.forEach(item=>{
                const newInfo = {
                    attr_id: item.attr_id,
                    attr_value: item.attr_vals
                }
                this.addForm.attrs.push(newInfo)
            })
            form.attrs = this.addForm.attrs
            //发起请求添加商品，商品名称唯一
           const {data:res}=await this.$http.post('goods',form)
            if(res.meta.status==201){
                this.$message.success('添加商品成功')
                this.$router.push('/goods')
            }else{
                this.$message.error('添加商品失败')
                
            }
            

        })
    }
  },

  computed: {
    cateId() {
      if (this.addForm.goods_cat.length === 3) {
        return this.addForm.goods_cat[2];
      }
    },
  },
};
</script>

<style scoped lang="less">
.el-checkbox {
  margin: 0 20px 0 0 !important;
}
.previewImg{
    width: 100%;
}

.btn{
    margin-top: 15px;
}


</style>